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- Subject: v23i041: Flex, a fast lex replacement, Part05/10
- Newsgroups: comp.sources.unix
- Approved: rsalz@uunet.UU.NET
- X-Checksum-Snefru: ec57c692 265e2299 7f1a36e3 d2f59402
-
- Submitted-by: Vern Paxson <vern@cs.cornell.edu>
- Posting-number: Volume 23, Issue 41
- Archive-name: flex2.3/part05
-
- #! /bin/sh
- # This is a shell archive. Remove anything before this line, then feed it
- # into a shell via "sh file" or similar. To overwrite existing files,
- # type "sh file -c".
- # The tool that generated this appeared in the comp.sources.unix newsgroup;
- # send mail to comp-sources-unix@uunet.uu.net if you want that tool.
- # Contents: flexdef.h main.c
- # Wrapped by rsalz@litchi.bbn.com on Wed Oct 10 13:24:01 1990
- PATH=/bin:/usr/bin:/usr/ucb ; export PATH
- echo If this archive is complete, you will see the following message:
- echo ' "shar: End of archive 5 (of 10)."'
- if test -f 'flexdef.h' -a "${1}" != "-c" ; then
- echo shar: Will not clobber existing file \"'flexdef.h'\"
- else
- echo shar: Extracting \"'flexdef.h'\" \(29063 characters\)
- sed "s/^X//" >'flexdef.h' <<'END_OF_FILE'
- X/* flexdef - definitions file for flex */
- X
- X/*-
- X * Copyright (c) 1990 The Regents of the University of California.
- X * All rights reserved.
- X *
- X * This code is derived from software contributed to Berkeley by
- X * Vern Paxson.
- X *
- X * The United States Government has rights in this work pursuant
- X * to contract no. DE-AC03-76SF00098 between the United States
- X * Department of Energy and the University of California.
- X *
- X * Redistribution and use in source and binary forms are permitted provided
- X * that: (1) source distributions retain this entire copyright notice and
- X * comment, and (2) distributions including binaries display the following
- X * acknowledgement: ``This product includes software developed by the
- X * University of California, Berkeley and its contributors'' in the
- X * documentation or other materials provided with the distribution and in
- X * all advertising materials mentioning features or use of this software.
- X * Neither the name of the University nor the names of its contributors may
- X * be used to endorse or promote products derived from this software without
- X * specific prior written permission.
- X * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
- X * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
- X * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- X */
- X
- X/* @(#) $Header: /usr/fsys/odin/a/vern/flex/RCS/flexdef.h,v 2.10 90/08/03 14:09:52 vern Exp $ (LBL) */
- X
- X#ifndef FILE
- X#include <stdio.h>
- X#endif
- X
- X/* always be prepared to generate an 8-bit scanner */
- X#define FLEX_8_BIT_CHARS
- X
- X#ifdef FLEX_8_BIT_CHARS
- X#define CSIZE 256
- X#define Char unsigned char
- X#else
- X#define Char char
- X#define CSIZE 128
- X#endif
- X
- X/* size of input alphabet - should be size of ASCII set */
- X#ifndef DEFAULT_CSIZE
- X#define DEFAULT_CSIZE 128
- X#endif
- X
- X#ifndef PROTO
- X#ifdef __STDC__
- X#define PROTO(proto) proto
- X#else
- X#define PROTO(proto) ()
- X#endif
- X#endif
- X
- X
- X#ifdef USG
- X#define SYS_V
- X#endif
- X
- X#ifdef SYS_V
- X#include <string.h>
- X#else
- X
- X#include <strings.h>
- X#ifdef lint
- Xchar *sprintf(); /* keep lint happy */
- X#endif
- X#ifdef SCO_UNIX
- Xvoid *memset();
- X#else
- Xchar *memset();
- X#endif
- X#endif
- X
- X#ifdef AMIGA
- X#define bzero(s, n) setmem((char *)(s), n, '\0')
- X#ifndef abs
- X#define abs(x) ((x) < 0 ? -(x) : (x))
- X#endif
- X#else
- X#define bzero(s, n) (void) memset((char *)(s), '\0', n)
- X#endif
- X
- X#ifdef VMS
- X#define unlink delete
- X#define SHORT_FILE_NAMES
- X#endif
- X
- X#ifdef __STDC__
- X
- X#ifdef __GNUC__
- X#include <stddef.h>
- Xvoid *malloc( size_t );
- Xvoid free( void* );
- X#else
- X#include <stdlib.h>
- X#endif
- X
- X#else /* ! __STDC__ */
- Xchar *malloc(), *realloc();
- X#endif
- X
- X
- X/* maximum line length we'll have to deal with */
- X#define MAXLINE BUFSIZ
- X
- X/* maximum size of file name */
- X#define FILENAMESIZE 1024
- X
- X#ifndef min
- X#define min(x,y) ((x) < (y) ? (x) : (y))
- X#endif
- X#ifndef max
- X#define max(x,y) ((x) > (y) ? (x) : (y))
- X#endif
- X
- X#ifdef MS_DOS
- X#ifndef abs
- X#define abs(x) ((x) < 0 ? -(x) : (x))
- X#endif
- X#define SHORT_FILE_NAMES
- X#endif
- X
- X#define true 1
- X#define false 0
- X
- X
- X#ifndef DEFAULT_SKELETON_FILE
- X#define DEFAULT_SKELETON_FILE "flex.skel"
- X#endif
- X
- X/* special chk[] values marking the slots taking by end-of-buffer and action
- X * numbers
- X */
- X#define EOB_POSITION -1
- X#define ACTION_POSITION -2
- X
- X/* number of data items per line for -f output */
- X#define NUMDATAITEMS 10
- X
- X/* number of lines of data in -f output before inserting a blank line for
- X * readability.
- X */
- X#define NUMDATALINES 10
- X
- X/* transition_struct_out() definitions */
- X#define TRANS_STRUCT_PRINT_LENGTH 15
- X
- X/* returns true if an nfa state has an epsilon out-transition slot
- X * that can be used. This definition is currently not used.
- X */
- X#define FREE_EPSILON(state) \
- X (transchar[state] == SYM_EPSILON && \
- X trans2[state] == NO_TRANSITION && \
- X finalst[state] != state)
- X
- X/* returns true if an nfa state has an epsilon out-transition character
- X * and both slots are free
- X */
- X#define SUPER_FREE_EPSILON(state) \
- X (transchar[state] == SYM_EPSILON && \
- X trans1[state] == NO_TRANSITION) \
- X
- X/* maximum number of NFA states that can comprise a DFA state. It's real
- X * big because if there's a lot of rules, the initial state will have a
- X * huge epsilon closure.
- X */
- X#define INITIAL_MAX_DFA_SIZE 750
- X#define MAX_DFA_SIZE_INCREMENT 750
- X
- X
- X/* a note on the following masks. They are used to mark accepting numbers
- X * as being special. As such, they implicitly limit the number of accepting
- X * numbers (i.e., rules) because if there are too many rules the rule numbers
- X * will overload the mask bits. Fortunately, this limit is \large/ (0x2000 ==
- X * 8192) so unlikely to actually cause any problems. A check is made in
- X * new_rule() to ensure that this limit is not reached.
- X */
- X
- X/* mask to mark a trailing context accepting number */
- X#define YY_TRAILING_MASK 0x2000
- X
- X/* mask to mark the accepting number of the "head" of a trailing context rule */
- X#define YY_TRAILING_HEAD_MASK 0x4000
- X
- X/* maximum number of rules, as outlined in the above note */
- X#define MAX_RULE (YY_TRAILING_MASK - 1)
- X
- X
- X/* NIL must be 0. If not, its special meaning when making equivalence classes
- X * (it marks the representative of a given e.c.) will be unidentifiable
- X */
- X#define NIL 0
- X
- X#define JAM -1 /* to mark a missing DFA transition */
- X#define NO_TRANSITION NIL
- X#define UNIQUE -1 /* marks a symbol as an e.c. representative */
- X#define INFINITY -1 /* for x{5,} constructions */
- X
- X#define INITIAL_MAX_CCLS 100 /* max number of unique character classes */
- X#define MAX_CCLS_INCREMENT 100
- X
- X/* size of table holding members of character classes */
- X#define INITIAL_MAX_CCL_TBL_SIZE 500
- X#define MAX_CCL_TBL_SIZE_INCREMENT 250
- X
- X#define INITIAL_MAX_RULES 100 /* default maximum number of rules */
- X#define MAX_RULES_INCREMENT 100
- X
- X#define INITIAL_MNS 2000 /* default maximum number of nfa states */
- X#define MNS_INCREMENT 1000 /* amount to bump above by if it's not enough */
- X
- X#define INITIAL_MAX_DFAS 1000 /* default maximum number of dfa states */
- X#define MAX_DFAS_INCREMENT 1000
- X
- X#define JAMSTATE -32766 /* marks a reference to the state that always jams */
- X
- X/* enough so that if it's subtracted from an NFA state number, the result
- X * is guaranteed to be negative
- X */
- X#define MARKER_DIFFERENCE 32000
- X#define MAXIMUM_MNS 31999
- X
- X/* maximum number of nxt/chk pairs for non-templates */
- X#define INITIAL_MAX_XPAIRS 2000
- X#define MAX_XPAIRS_INCREMENT 2000
- X
- X/* maximum number of nxt/chk pairs needed for templates */
- X#define INITIAL_MAX_TEMPLATE_XPAIRS 2500
- X#define MAX_TEMPLATE_XPAIRS_INCREMENT 2500
- X
- X#define SYM_EPSILON (CSIZE + 1) /* to mark transitions on the symbol epsilon */
- X
- X#define INITIAL_MAX_SCS 40 /* maximum number of start conditions */
- X#define MAX_SCS_INCREMENT 40 /* amount to bump by if it's not enough */
- X
- X#define ONE_STACK_SIZE 500 /* stack of states with only one out-transition */
- X#define SAME_TRANS -1 /* transition is the same as "default" entry for state */
- X
- X/* the following percentages are used to tune table compression:
- X
- X * the percentage the number of out-transitions a state must be of the
- X * number of equivalence classes in order to be considered for table
- X * compaction by using protos
- X */
- X#define PROTO_SIZE_PERCENTAGE 15
- X
- X/* the percentage the number of homogeneous out-transitions of a state
- X * must be of the number of total out-transitions of the state in order
- X * that the state's transition table is first compared with a potential
- X * template of the most common out-transition instead of with the first
- X * proto in the proto queue
- X */
- X#define CHECK_COM_PERCENTAGE 50
- X
- X/* the percentage the number of differences between a state's transition
- X * table and the proto it was first compared with must be of the total
- X * number of out-transitions of the state in order to keep the first
- X * proto as a good match and not search any further
- X */
- X#define FIRST_MATCH_DIFF_PERCENTAGE 10
- X
- X/* the percentage the number of differences between a state's transition
- X * table and the most similar proto must be of the state's total number
- X * of out-transitions to use the proto as an acceptable close match
- X */
- X#define ACCEPTABLE_DIFF_PERCENTAGE 50
- X
- X/* the percentage the number of homogeneous out-transitions of a state
- X * must be of the number of total out-transitions of the state in order
- X * to consider making a template from the state
- X */
- X#define TEMPLATE_SAME_PERCENTAGE 60
- X
- X/* the percentage the number of differences between a state's transition
- X * table and the most similar proto must be of the state's total number
- X * of out-transitions to create a new proto from the state
- X */
- X#define NEW_PROTO_DIFF_PERCENTAGE 20
- X
- X/* the percentage the total number of out-transitions of a state must be
- X * of the number of equivalence classes in order to consider trying to
- X * fit the transition table into "holes" inside the nxt/chk table.
- X */
- X#define INTERIOR_FIT_PERCENTAGE 15
- X
- X/* size of region set aside to cache the complete transition table of
- X * protos on the proto queue to enable quick comparisons
- X */
- X#define PROT_SAVE_SIZE 2000
- X
- X#define MSP 50 /* maximum number of saved protos (protos on the proto queue) */
- X
- X/* maximum number of out-transitions a state can have that we'll rummage
- X * around through the interior of the internal fast table looking for a
- X * spot for it
- X */
- X#define MAX_XTIONS_FULL_INTERIOR_FIT 4
- X
- X/* maximum number of rules which will be reported as being associated
- X * with a DFA state
- X */
- X#define MAX_ASSOC_RULES 100
- X
- X/* number that, if used to subscript an array, has a good chance of producing
- X * an error; should be small enough to fit into a short
- X */
- X#define BAD_SUBSCRIPT -32767
- X
- X/* absolute value of largest number that can be stored in a short, with a
- X * bit of slop thrown in for general paranoia.
- X */
- X#define MAX_SHORT 32766
- X
- X
- X/* Declarations for global variables. */
- X
- X/* variables for symbol tables:
- X * sctbl - start-condition symbol table
- X * ndtbl - name-definition symbol table
- X * ccltab - character class text symbol table
- X */
- X
- Xstruct hash_entry
- X {
- X struct hash_entry *prev, *next;
- X char *name;
- X char *str_val;
- X int int_val;
- X } ;
- X
- Xtypedef struct hash_entry *hash_table[];
- X
- X#define NAME_TABLE_HASH_SIZE 101
- X#define START_COND_HASH_SIZE 101
- X#define CCL_HASH_SIZE 101
- X
- Xextern struct hash_entry *ndtbl[NAME_TABLE_HASH_SIZE];
- Xextern struct hash_entry *sctbl[START_COND_HASH_SIZE];
- Xextern struct hash_entry *ccltab[CCL_HASH_SIZE];
- X
- X
- X/* variables for flags:
- X * printstats - if true (-v), dump statistics
- X * syntaxerror - true if a syntax error has been found
- X * eofseen - true if we've seen an eof in the input file
- X * ddebug - if true (-d), make a "debug" scanner
- X * trace - if true (-T), trace processing
- X * spprdflt - if true (-s), suppress the default rule
- X * interactive - if true (-I), generate an interactive scanner
- X * caseins - if true (-i), generate a case-insensitive scanner
- X * useecs - if true (-Ce flag), use equivalence classes
- X * fulltbl - if true (-Cf flag), don't compress the DFA state table
- X * usemecs - if true (-Cm flag), use meta-equivalence classes
- X * fullspd - if true (-F flag), use Jacobson method of table representation
- X * gen_line_dirs - if true (i.e., no -L flag), generate #line directives
- X * performance_report - if true (i.e., -p flag), generate a report relating
- X * to scanner performance
- X * backtrack_report - if true (i.e., -b flag), generate "lex.backtrack" file
- X * listing backtracking states
- X * csize - size of character set for the scanner we're generating;
- X * 128 for 7-bit chars and 256 for 8-bit
- X * yymore_used - if true, yymore() is used in input rules
- X * reject - if true, generate backtracking tables for REJECT macro
- X * real_reject - if true, scanner really uses REJECT (as opposed to just
- X * having "reject" set for variable trailing context)
- X * continued_action - true if this rule's action is to "fall through" to
- X * the next rule's action (i.e., the '|' action)
- X * yymore_really_used - has a REALLY_xxx value indicating whether a
- X * %used or %notused was used with yymore()
- X * reject_really_used - same for REJECT
- X */
- X
- Xextern int printstats, syntaxerror, eofseen, ddebug, trace, spprdflt;
- Xextern int interactive, caseins, useecs, fulltbl, usemecs;
- Xextern int fullspd, gen_line_dirs, performance_report, backtrack_report, csize;
- Xextern int yymore_used, reject, real_reject, continued_action;
- X
- X#define REALLY_NOT_DETERMINED 0
- X#define REALLY_USED 1
- X#define REALLY_NOT_USED 2
- Xextern int yymore_really_used, reject_really_used;
- X
- X
- X/* variables used in the flex input routines:
- X * datapos - characters on current output line
- X * dataline - number of contiguous lines of data in current data
- X * statement. Used to generate readable -f output
- X * linenum - current input line number
- X * skelfile - the skeleton file
- X * yyin - input file
- X * temp_action_file - temporary file to hold actions
- X * backtrack_file - file to summarize backtracking states to
- X * infilename - name of input file
- X * action_file_name - name of the temporary file
- X * input_files - array holding names of input files
- X * num_input_files - size of input_files array
- X * program_name - name with which program was invoked
- X */
- X
- Xextern int datapos, dataline, linenum;
- Xextern FILE *skelfile, *yyin, *temp_action_file, *backtrack_file;
- Xextern char *infilename;
- Xextern char *action_file_name;
- Xextern char **input_files;
- Xextern int num_input_files;
- Xextern char *program_name;
- X
- X
- X/* variables for stack of states having only one out-transition:
- X * onestate - state number
- X * onesym - transition symbol
- X * onenext - target state
- X * onedef - default base entry
- X * onesp - stack pointer
- X */
- X
- Xextern int onestate[ONE_STACK_SIZE], onesym[ONE_STACK_SIZE];
- Xextern int onenext[ONE_STACK_SIZE], onedef[ONE_STACK_SIZE], onesp;
- X
- X
- X/* variables for nfa machine data:
- X * current_mns - current maximum on number of NFA states
- X * num_rules - number of the last accepting state; also is number of
- X * rules created so far
- X * current_max_rules - current maximum number of rules
- X * lastnfa - last nfa state number created
- X * firstst - physically the first state of a fragment
- X * lastst - last physical state of fragment
- X * finalst - last logical state of fragment
- X * transchar - transition character
- X * trans1 - transition state
- X * trans2 - 2nd transition state for epsilons
- X * accptnum - accepting number
- X * assoc_rule - rule associated with this NFA state (or 0 if none)
- X * state_type - a STATE_xxx type identifying whether the state is part
- X * of a normal rule, the leading state in a trailing context
- X * rule (i.e., the state which marks the transition from
- X * recognizing the text-to-be-matched to the beginning of
- X * the trailing context), or a subsequent state in a trailing
- X * context rule
- X * rule_type - a RULE_xxx type identifying whether this a a ho-hum
- X * normal rule or one which has variable head & trailing
- X * context
- X * rule_linenum - line number associated with rule
- X */
- X
- Xextern int current_mns, num_rules, current_max_rules, lastnfa;
- Xextern int *firstst, *lastst, *finalst, *transchar, *trans1, *trans2;
- Xextern int *accptnum, *assoc_rule, *state_type, *rule_type, *rule_linenum;
- X
- X/* different types of states; values are useful as masks, as well, for
- X * routines like check_trailing_context()
- X */
- X#define STATE_NORMAL 0x1
- X#define STATE_TRAILING_CONTEXT 0x2
- X
- X/* global holding current type of state we're making */
- X
- Xextern int current_state_type;
- X
- X/* different types of rules */
- X#define RULE_NORMAL 0
- X#define RULE_VARIABLE 1
- X
- X/* true if the input rules include a rule with both variable-length head
- X * and trailing context, false otherwise
- X */
- Xextern int variable_trailing_context_rules;
- X
- X
- X/* variables for protos:
- X * numtemps - number of templates created
- X * numprots - number of protos created
- X * protprev - backlink to a more-recently used proto
- X * protnext - forward link to a less-recently used proto
- X * prottbl - base/def table entry for proto
- X * protcomst - common state of proto
- X * firstprot - number of the most recently used proto
- X * lastprot - number of the least recently used proto
- X * protsave contains the entire state array for protos
- X */
- X
- Xextern int numtemps, numprots, protprev[MSP], protnext[MSP], prottbl[MSP];
- Xextern int protcomst[MSP], firstprot, lastprot, protsave[PROT_SAVE_SIZE];
- X
- X
- X/* variables for managing equivalence classes:
- X * numecs - number of equivalence classes
- X * nextecm - forward link of Equivalence Class members
- X * ecgroup - class number or backward link of EC members
- X * nummecs - number of meta-equivalence classes (used to compress
- X * templates)
- X * tecfwd - forward link of meta-equivalence classes members
- X * tecbck - backward link of MEC's
- X * xlation - maps character codes to their translations, or nil if no %t table
- X * num_xlations - number of different xlation values
- X */
- X
- X/* reserve enough room in the equivalence class arrays so that we
- X * can use the CSIZE'th element to hold equivalence class information
- X * for the NUL character. Later we'll move this information into
- X * the 0th element.
- X */
- Xextern int numecs, nextecm[CSIZE + 1], ecgroup[CSIZE + 1], nummecs;
- X
- X/* meta-equivalence classes are indexed starting at 1, so it's possible
- X * that they will require positions from 1 .. CSIZE, i.e., CSIZE + 1
- X * slots total (since the arrays are 0-based). nextecm[] and ecgroup[]
- X * don't require the extra position since they're indexed from 1 .. CSIZE - 1.
- X */
- Xextern int tecfwd[CSIZE + 1], tecbck[CSIZE + 1];
- X
- Xextern int *xlation;
- Xextern int num_xlations;
- X
- X
- X/* variables for start conditions:
- X * lastsc - last start condition created
- X * current_max_scs - current limit on number of start conditions
- X * scset - set of rules active in start condition
- X * scbol - set of rules active only at the beginning of line in a s.c.
- X * scxclu - true if start condition is exclusive
- X * sceof - true if start condition has EOF rule
- X * scname - start condition name
- X * actvsc - stack of active start conditions for the current rule
- X */
- X
- Xextern int lastsc, current_max_scs, *scset, *scbol, *scxclu, *sceof, *actvsc;
- Xextern char **scname;
- X
- X
- X/* variables for dfa machine data:
- X * current_max_dfa_size - current maximum number of NFA states in DFA
- X * current_max_xpairs - current maximum number of non-template xtion pairs
- X * current_max_template_xpairs - current maximum number of template pairs
- X * current_max_dfas - current maximum number DFA states
- X * lastdfa - last dfa state number created
- X * nxt - state to enter upon reading character
- X * chk - check value to see if "nxt" applies
- X * tnxt - internal nxt table for templates
- X * base - offset into "nxt" for given state
- X * def - where to go if "chk" disallows "nxt" entry
- X * nultrans - NUL transition for each state
- X * NUL_ec - equivalence class of the NUL character
- X * tblend - last "nxt/chk" table entry being used
- X * firstfree - first empty entry in "nxt/chk" table
- X * dss - nfa state set for each dfa
- X * dfasiz - size of nfa state set for each dfa
- X * dfaacc - accepting set for each dfa state (or accepting number, if
- X * -r is not given)
- X * accsiz - size of accepting set for each dfa state
- X * dhash - dfa state hash value
- X * numas - number of DFA accepting states created; note that this
- X * is not necessarily the same value as num_rules, which is the analogous
- X * value for the NFA
- X * numsnpairs - number of state/nextstate transition pairs
- X * jambase - position in base/def where the default jam table starts
- X * jamstate - state number corresponding to "jam" state
- X * end_of_buffer_state - end-of-buffer dfa state number
- X */
- X
- Xextern int current_max_dfa_size, current_max_xpairs;
- Xextern int current_max_template_xpairs, current_max_dfas;
- Xextern int lastdfa, lasttemp, *nxt, *chk, *tnxt;
- Xextern int *base, *def, *nultrans, NUL_ec, tblend, firstfree, **dss, *dfasiz;
- Xextern union dfaacc_union
- X {
- X int *dfaacc_set;
- X int dfaacc_state;
- X } *dfaacc;
- Xextern int *accsiz, *dhash, numas;
- Xextern int numsnpairs, jambase, jamstate;
- Xextern int end_of_buffer_state;
- X
- X/* variables for ccl information:
- X * lastccl - ccl index of the last created ccl
- X * current_maxccls - current limit on the maximum number of unique ccl's
- X * cclmap - maps a ccl index to its set pointer
- X * ccllen - gives the length of a ccl
- X * cclng - true for a given ccl if the ccl is negated
- X * cclreuse - counts how many times a ccl is re-used
- X * current_max_ccl_tbl_size - current limit on number of characters needed
- X * to represent the unique ccl's
- X * ccltbl - holds the characters in each ccl - indexed by cclmap
- X */
- X
- Xextern int lastccl, current_maxccls, *cclmap, *ccllen, *cclng, cclreuse;
- Xextern int current_max_ccl_tbl_size;
- Xextern Char *ccltbl;
- X
- X
- X/* variables for miscellaneous information:
- X * starttime - real-time when we started
- X * endtime - real-time when we ended
- X * nmstr - last NAME scanned by the scanner
- X * sectnum - section number currently being parsed
- X * nummt - number of empty nxt/chk table entries
- X * hshcol - number of hash collisions detected by snstods
- X * dfaeql - number of times a newly created dfa was equal to an old one
- X * numeps - number of epsilon NFA states created
- X * eps2 - number of epsilon states which have 2 out-transitions
- X * num_reallocs - number of times it was necessary to realloc() a group
- X * of arrays
- X * tmpuses - number of DFA states that chain to templates
- X * totnst - total number of NFA states used to make DFA states
- X * peakpairs - peak number of transition pairs we had to store internally
- X * numuniq - number of unique transitions
- X * numdup - number of duplicate transitions
- X * hshsave - number of hash collisions saved by checking number of states
- X * num_backtracking - number of DFA states requiring back-tracking
- X * bol_needed - whether scanner needs beginning-of-line recognition
- X */
- X
- Xextern char *starttime, *endtime, nmstr[MAXLINE];
- Xextern int sectnum, nummt, hshcol, dfaeql, numeps, eps2, num_reallocs;
- Xextern int tmpuses, totnst, peakpairs, numuniq, numdup, hshsave;
- Xextern int num_backtracking, bol_needed;
- X
- Xvoid *allocate_array(), *reallocate_array();
- X
- X#define allocate_integer_array(size) \
- X (int *) allocate_array( size, sizeof( int ) )
- X
- X#define reallocate_integer_array(array,size) \
- X (int *) reallocate_array( (void *) array, size, sizeof( int ) )
- X
- X#define allocate_int_ptr_array(size) \
- X (int **) allocate_array( size, sizeof( int * ) )
- X
- X#define allocate_char_ptr_array(size) \
- X (char **) allocate_array( size, sizeof( char * ) )
- X
- X#define allocate_dfaacc_union(size) \
- X (union dfaacc_union *) \
- X allocate_array( size, sizeof( union dfaacc_union ) )
- X
- X#define reallocate_int_ptr_array(array,size) \
- X (int **) reallocate_array( (void *) array, size, sizeof( int * ) )
- X
- X#define reallocate_char_ptr_array(array,size) \
- X (char **) reallocate_array( (void *) array, size, sizeof( char * ) )
- X
- X#define reallocate_dfaacc_union(array, size) \
- X (union dfaacc_union *) \
- X reallocate_array( (void *) array, size, sizeof( union dfaacc_union ) )
- X
- X#define allocate_character_array(size) \
- X (Char *) allocate_array( size, sizeof( Char ) )
- X
- X#define reallocate_character_array(array,size) \
- X (Char *) reallocate_array( (void *) array, size, sizeof( Char ) )
- X
- X
- X/* used to communicate between scanner and parser. The type should really
- X * be YYSTYPE, but we can't easily get our hands on it.
- X */
- Xextern int yylval;
- X
- X
- X/* external functions that are cross-referenced among the flex source files */
- X
- X
- X/* from file ccl.c */
- X
- Xextern void ccladd PROTO((int, int)); /* Add a single character to a ccl */
- Xextern int cclinit PROTO(()); /* make an empty ccl */
- Xextern void cclnegate PROTO((int)); /* negate a ccl */
- X
- X/* list the members of a set of characters in CCL form */
- Xextern void list_character_set PROTO((FILE*, int[]));
- X
- X
- X/* from file dfa.c */
- X
- X/* increase the maximum number of dfas */
- Xextern void increase_max_dfas PROTO(());
- X
- Xextern void ntod PROTO(()); /* convert a ndfa to a dfa */
- X
- X
- X/* from file ecs.c */
- X
- X/* convert character classes to set of equivalence classes */
- Xextern void ccl2ecl PROTO(());
- X
- X/* associate equivalence class numbers with class members */
- Xextern int cre8ecs PROTO((int[], int[], int));
- X
- X/* associate equivalence class numbers using %t table */
- Xextern int ecs_from_xlation PROTO((int[]));
- X
- X/* update equivalence classes based on character class transitions */
- Xextern void mkeccl PROTO((Char[], int, int[], int[], int, int));
- X
- X/* create equivalence class for single character */
- Xextern void mkechar PROTO((int, int[], int[]));
- X
- X
- X/* from file gen.c */
- X
- Xextern void make_tables PROTO(()); /* generate transition tables */
- X
- X
- X/* from file main.c */
- X
- Xextern void flexend PROTO((int));
- X
- X
- X/* from file misc.c */
- X
- X/* write out the actions from the temporary file to lex.yy.c */
- Xextern void action_out PROTO(());
- X
- X/* true if a string is all lower case */
- Xextern int all_lower PROTO((register Char *));
- X
- X/* true if a string is all upper case */
- Xextern int all_upper PROTO((register Char *));
- X
- X/* bubble sort an integer array */
- Xextern void bubble PROTO((int [], int));
- X
- X/* shell sort a character array */
- Xextern void cshell PROTO((Char [], int, int));
- X
- Xextern void dataend PROTO(()); /* finish up a block of data declarations */
- X
- X/* report an error message and terminate */
- Xextern void flexerror PROTO((char[]));
- X
- X/* report a fatal error message and terminate */
- Xextern void flexfatal PROTO((char[]));
- X
- X/* report an error message formatted with one integer argument */
- Xextern void lerrif PROTO((char[], int));
- X
- X/* report an error message formatted with one string argument */
- Xextern void lerrsf PROTO((char[], char[]));
- X
- X/* spit out a "# line" statement */
- Xextern void line_directive_out PROTO((FILE*));
- X
- X/* generate a data statment for a two-dimensional array */
- Xextern void mk2data PROTO((int));
- X
- Xextern void mkdata PROTO((int)); /* generate a data statement */
- X
- X/* return the integer represented by a string of digits */
- Xextern int myctoi PROTO((Char []));
- X
- X/* write out one section of the skeleton file */
- Xextern void skelout PROTO(());
- X
- X/* output a yy_trans_info structure */
- Xextern void transition_struct_out PROTO((int, int));
- X
- X
- X/* from file nfa.c */
- X
- X/* add an accepting state to a machine */
- Xextern void add_accept PROTO((int, int));
- X
- X/* make a given number of copies of a singleton machine */
- Xextern int copysingl PROTO((int, int));
- X
- X/* debugging routine to write out an nfa */
- Xextern void dumpnfa PROTO((int));
- X
- X/* finish up the processing for a rule */
- Xextern void finish_rule PROTO((int, int, int, int));
- X
- X/* connect two machines together */
- Xextern int link_machines PROTO((int, int));
- X
- X/* mark each "beginning" state in a machine as being a "normal" (i.e.,
- X * not trailing context associated) state
- X */
- Xextern void mark_beginning_as_normal PROTO((register int));
- X
- X/* make a machine that branches to two machines */
- Xextern int mkbranch PROTO((int, int));
- X
- Xextern int mkclos PROTO((int)); /* convert a machine into a closure */
- Xextern int mkopt PROTO((int)); /* make a machine optional */
- X
- X/* make a machine that matches either one of two machines */
- Xextern int mkor PROTO((int, int));
- X
- X/* convert a machine into a positive closure */
- Xextern int mkposcl PROTO((int));
- X
- Xextern int mkrep PROTO((int, int, int)); /* make a replicated machine */
- X
- X/* create a state with a transition on a given symbol */
- Xextern int mkstate PROTO((int));
- X
- Xextern void new_rule PROTO(()); /* initialize for a new rule */
- X
- X
- X/* from file parse.y */
- X
- X/* write out a message formatted with one string, pinpointing its location */
- Xextern void format_pinpoint_message PROTO((char[], char[]));
- X
- X/* write out a message, pinpointing its location */
- Xextern void pinpoint_message PROTO((char[]));
- X
- Xextern void synerr PROTO((char [])); /* report a syntax error */
- Xextern int yyparse PROTO(()); /* the YACC parser */
- X
- X
- X/* from file scan.l */
- X
- Xextern int flexscan PROTO(()); /* the Flex-generated scanner for flex */
- X
- X/* open the given file (if NULL, stdin) for scanning */
- Xextern void set_input_file PROTO((char*));
- X
- Xextern int yywrap PROTO(()); /* wrapup a file in the lexical analyzer */
- X
- X
- X/* from file sym.c */
- X
- X/* save the text of a character class */
- Xextern void cclinstal PROTO ((Char [], int));
- X
- X/* lookup the number associated with character class */
- Xextern int ccllookup PROTO((Char []));
- X
- Xextern void ndinstal PROTO((char[], Char[])); /* install a name definition */
- Xextern void scinstal PROTO((char[], int)); /* make a start condition */
- X
- X/* lookup the number associated with a start condition */
- Xextern int sclookup PROTO((char[]));
- X
- X
- X/* from file tblcmp.c */
- X
- X/* build table entries for dfa state */
- Xextern void bldtbl PROTO((int[], int, int, int, int));
- X
- Xextern void cmptmps PROTO(()); /* compress template table entries */
- Xextern void inittbl PROTO(()); /* initialize transition tables */
- Xextern void mkdeftbl PROTO(()); /* make the default, "jam" table entries */
- X
- X/* create table entries for a state (or state fragment) which has
- X * only one out-transition */
- Xextern void mk1tbl PROTO((int, int, int, int));
- X
- X/* place a state into full speed transition table */
- Xextern void place_state PROTO((int*, int, int));
- X
- X/* save states with only one out-transition to be processed later */
- Xextern void stack1 PROTO((int, int, int, int));
- X
- X
- X/* from file yylex.c */
- X
- Xextern int yylex PROTO(());
- X
- X
- X/* The Unix kernel calls used here */
- X
- Xextern int read PROTO((int, char*, int));
- Xextern int unlink PROTO((char*));
- Xextern int write PROTO((int, char*, int));
- END_OF_FILE
- if test 29063 -ne `wc -c <'flexdef.h'`; then
- echo shar: \"'flexdef.h'\" unpacked with wrong size!
- fi
- # end of 'flexdef.h'
- fi
- if test -f 'main.c' -a "${1}" != "-c" ; then
- echo shar: Will not clobber existing file \"'main.c'\"
- else
- echo shar: Extracting \"'main.c'\" \(19459 characters\)
- sed "s/^X//" >'main.c' <<'END_OF_FILE'
- X/* flex - tool to generate fast lexical analyzers */
- X
- X/*-
- X * Copyright (c) 1990 The Regents of the University of California.
- X * All rights reserved.
- X *
- X * This code is derived from software contributed to Berkeley by
- X * Vern Paxson.
- X *
- X * The United States Government has rights in this work pursuant
- X * to contract no. DE-AC03-76SF00098 between the United States
- X * Department of Energy and the University of California.
- X *
- X * Redistribution and use in source and binary forms are permitted provided
- X * that: (1) source distributions retain this entire copyright notice and
- X * comment, and (2) distributions including binaries display the following
- X * acknowledgement: ``This product includes software developed by the
- X * University of California, Berkeley and its contributors'' in the
- X * documentation or other materials provided with the distribution and in
- X * all advertising materials mentioning features or use of this software.
- X * Neither the name of the University nor the names of its contributors may
- X * be used to endorse or promote products derived from this software without
- X * specific prior written permission.
- X * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
- X * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
- X * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- X */
- X
- X#ifndef lint
- Xchar copyright[] =
- X"@(#) Copyright (c) 1990 The Regents of the University of California.\n\
- X All rights reserved.\n";
- X#endif /* not lint */
- X
- X#ifndef lint
- Xstatic char rcsid[] =
- X "@(#) $Header: /usr/fsys/odin/a/vern/flex/RCS/main.c,v 2.9 90/06/27 23:48:24 vern Exp $ (LBL)";
- X#endif
- X
- X
- X#include "flexdef.h"
- X
- Xstatic char flex_version[] = "2.3";
- X
- X
- X/* declare functions that have forward references */
- X
- Xvoid flexinit PROTO((int, char**));
- Xvoid readin PROTO(());
- Xvoid set_up_initial_allocations PROTO(());
- X
- X
- X/* these globals are all defined and commented in flexdef.h */
- Xint printstats, syntaxerror, eofseen, ddebug, trace, spprdflt;
- Xint interactive, caseins, useecs, fulltbl, usemecs;
- Xint fullspd, gen_line_dirs, performance_report, backtrack_report, csize;
- Xint yymore_used, reject, real_reject, continued_action;
- Xint yymore_really_used, reject_really_used;
- Xint datapos, dataline, linenum;
- XFILE *skelfile = NULL;
- Xchar *infilename = NULL;
- Xint onestate[ONE_STACK_SIZE], onesym[ONE_STACK_SIZE];
- Xint onenext[ONE_STACK_SIZE], onedef[ONE_STACK_SIZE], onesp;
- Xint current_mns, num_rules, current_max_rules, lastnfa;
- Xint *firstst, *lastst, *finalst, *transchar, *trans1, *trans2;
- Xint *accptnum, *assoc_rule, *state_type, *rule_type, *rule_linenum;
- Xint current_state_type;
- Xint variable_trailing_context_rules;
- Xint numtemps, numprots, protprev[MSP], protnext[MSP], prottbl[MSP];
- Xint protcomst[MSP], firstprot, lastprot, protsave[PROT_SAVE_SIZE];
- Xint numecs, nextecm[CSIZE + 1], ecgroup[CSIZE + 1], nummecs, tecfwd[CSIZE + 1];
- Xint tecbck[CSIZE + 1];
- Xint *xlation = (int *) 0;
- Xint num_xlations;
- Xint lastsc, current_max_scs, *scset, *scbol, *scxclu, *sceof, *actvsc;
- Xchar **scname;
- Xint current_max_dfa_size, current_max_xpairs;
- Xint current_max_template_xpairs, current_max_dfas;
- Xint lastdfa, *nxt, *chk, *tnxt;
- Xint *base, *def, *nultrans, NUL_ec, tblend, firstfree, **dss, *dfasiz;
- Xunion dfaacc_union *dfaacc;
- Xint *accsiz, *dhash, numas;
- Xint numsnpairs, jambase, jamstate;
- Xint lastccl, current_maxccls, *cclmap, *ccllen, *cclng, cclreuse;
- Xint current_max_ccl_tbl_size;
- XChar *ccltbl;
- Xchar *starttime, *endtime, nmstr[MAXLINE];
- Xint sectnum, nummt, hshcol, dfaeql, numeps, eps2, num_reallocs;
- Xint tmpuses, totnst, peakpairs, numuniq, numdup, hshsave;
- Xint num_backtracking, bol_needed;
- XFILE *temp_action_file;
- XFILE *backtrack_file;
- Xint end_of_buffer_state;
- Xchar *action_file_name = NULL;
- Xchar **input_files;
- Xint num_input_files;
- Xchar *program_name;
- X
- X#ifndef SHORT_FILE_NAMES
- Xstatic char *outfile = "lex.yy.c";
- X#else
- Xstatic char *outfile = "lexyy.c";
- X#endif
- Xstatic int outfile_created = 0;
- Xstatic int use_stdout;
- Xstatic char *skelname = NULL;
- X
- X
- Xint main( argc, argv )
- Xint argc;
- Xchar **argv;
- X
- X {
- X flexinit( argc, argv );
- X
- X readin();
- X
- X if ( syntaxerror )
- X flexend( 1 );
- X
- X if ( yymore_really_used == REALLY_USED )
- X yymore_used = true;
- X else if ( yymore_really_used == REALLY_NOT_USED )
- X yymore_used = false;
- X
- X if ( reject_really_used == REALLY_USED )
- X reject = true;
- X else if ( reject_really_used == REALLY_NOT_USED )
- X reject = false;
- X
- X if ( performance_report )
- X {
- X if ( interactive )
- X fprintf( stderr,
- X "-I (interactive) entails a minor performance penalty\n" );
- X
- X if ( yymore_used )
- X fprintf( stderr, "yymore() entails a minor performance penalty\n" );
- X
- X if ( reject )
- X fprintf( stderr, "REJECT entails a large performance penalty\n" );
- X
- X if ( variable_trailing_context_rules )
- X fprintf( stderr,
- X"Variable trailing context rules entail a large performance penalty\n" );
- X }
- X
- X if ( reject )
- X real_reject = true;
- X
- X if ( variable_trailing_context_rules )
- X reject = true;
- X
- X if ( (fulltbl || fullspd) && reject )
- X {
- X if ( real_reject )
- X flexerror( "REJECT cannot be used with -f or -F" );
- X else
- X flexerror(
- X "variable trailing context rules cannot be used with -f or -F" );
- X }
- X
- X ntod();
- X
- X /* generate the C state transition tables from the DFA */
- X make_tables();
- X
- X /* note, flexend does not return. It exits with its argument as status. */
- X
- X flexend( 0 );
- X
- X /*NOTREACHED*/
- X }
- X
- X
- X/* flexend - terminate flex
- X *
- X * synopsis
- X * int status;
- X * flexend( status );
- X *
- X * status is exit status.
- X *
- X * note
- X * This routine does not return.
- X */
- X
- Xvoid flexend( status )
- Xint status;
- X
- X {
- X int tblsiz;
- X char *flex_gettime();
- X
- X if ( skelfile != NULL )
- X {
- X if ( ferror( skelfile ) )
- X flexfatal( "error occurred when writing skeleton file" );
- X
- X else if ( fclose( skelfile ) )
- X flexfatal( "error occurred when closing skeleton file" );
- X }
- X
- X if ( temp_action_file )
- X {
- X if ( ferror( temp_action_file ) )
- X flexfatal( "error occurred when writing temporary action file" );
- X
- X else if ( fclose( temp_action_file ) )
- X flexfatal( "error occurred when closing temporary action file" );
- X
- X else if ( unlink( action_file_name ) )
- X flexfatal( "error occurred when deleting temporary action file" );
- X }
- X
- X if ( status != 0 && outfile_created )
- X {
- X if ( ferror( stdout ) )
- X flexfatal( "error occurred when writing output file" );
- X
- X else if ( fclose( stdout ) )
- X flexfatal( "error occurred when closing output file" );
- X
- X else if ( unlink( outfile ) )
- X flexfatal( "error occurred when deleting output file" );
- X }
- X
- X if ( backtrack_report && backtrack_file )
- X {
- X if ( num_backtracking == 0 )
- X fprintf( backtrack_file, "No backtracking.\n" );
- X else if ( fullspd || fulltbl )
- X fprintf( backtrack_file,
- X "%d backtracking (non-accepting) states.\n",
- X num_backtracking );
- X else
- X fprintf( backtrack_file, "Compressed tables always backtrack.\n" );
- X
- X if ( ferror( backtrack_file ) )
- X flexfatal( "error occurred when writing backtracking file" );
- X
- X else if ( fclose( backtrack_file ) )
- X flexfatal( "error occurred when closing backtracking file" );
- X }
- X
- X if ( printstats )
- X {
- X endtime = flex_gettime();
- X
- X fprintf( stderr, "%s version %s usage statistics:\n", program_name,
- X flex_version );
- X fprintf( stderr, " started at %s, finished at %s\n",
- X starttime, endtime );
- X
- X fprintf( stderr, " scanner options: -" );
- X
- X if ( backtrack_report )
- X putc( 'b', stderr );
- X if ( ddebug )
- X putc( 'd', stderr );
- X if ( interactive )
- X putc( 'I', stderr );
- X if ( caseins )
- X putc( 'i', stderr );
- X if ( ! gen_line_dirs )
- X putc( 'L', stderr );
- X if ( performance_report )
- X putc( 'p', stderr );
- X if ( spprdflt )
- X putc( 's', stderr );
- X if ( use_stdout )
- X putc( 't', stderr );
- X if ( trace )
- X putc( 'T', stderr );
- X if ( printstats )
- X putc( 'v', stderr ); /* always true! */
- X if ( csize == 256 )
- X putc( '8', stderr );
- X
- X fprintf( stderr, " -C" );
- X
- X if ( fulltbl )
- X putc( 'f', stderr );
- X if ( fullspd )
- X putc( 'F', stderr );
- X if ( useecs )
- X putc( 'e', stderr );
- X if ( usemecs )
- X putc( 'm', stderr );
- X
- X if ( strcmp( skelname, DEFAULT_SKELETON_FILE ) )
- X fprintf( stderr, " -S%s", skelname );
- X
- X putc( '\n', stderr );
- X
- X fprintf( stderr, " %d/%d NFA states\n", lastnfa, current_mns );
- X fprintf( stderr, " %d/%d DFA states (%d words)\n", lastdfa,
- X current_max_dfas, totnst );
- X fprintf( stderr,
- X " %d rules\n", num_rules - 1 /* - 1 for def. rule */ );
- X
- X if ( num_backtracking == 0 )
- X fprintf( stderr, " No backtracking\n" );
- X else if ( fullspd || fulltbl )
- X fprintf( stderr, " %d backtracking (non-accepting) states\n",
- X num_backtracking );
- X else
- X fprintf( stderr, " compressed tables always backtrack\n" );
- X
- X if ( bol_needed )
- X fprintf( stderr, " Beginning-of-line patterns used\n" );
- X
- X fprintf( stderr, " %d/%d start conditions\n", lastsc,
- X current_max_scs );
- X fprintf( stderr, " %d epsilon states, %d double epsilon states\n",
- X numeps, eps2 );
- X
- X if ( lastccl == 0 )
- X fprintf( stderr, " no character classes\n" );
- X else
- X fprintf( stderr,
- X " %d/%d character classes needed %d/%d words of storage, %d reused\n",
- X lastccl, current_maxccls,
- X cclmap[lastccl] + ccllen[lastccl],
- X current_max_ccl_tbl_size, cclreuse );
- X
- X fprintf( stderr, " %d state/nextstate pairs created\n", numsnpairs );
- X fprintf( stderr, " %d/%d unique/duplicate transitions\n",
- X numuniq, numdup );
- X
- X if ( fulltbl )
- X {
- X tblsiz = lastdfa * numecs;
- X fprintf( stderr, " %d table entries\n", tblsiz );
- X }
- X
- X else
- X {
- X tblsiz = 2 * (lastdfa + numtemps) + 2 * tblend;
- X
- X fprintf( stderr, " %d/%d base-def entries created\n",
- X lastdfa + numtemps, current_max_dfas );
- X fprintf( stderr, " %d/%d (peak %d) nxt-chk entries created\n",
- X tblend, current_max_xpairs, peakpairs );
- X fprintf( stderr,
- X " %d/%d (peak %d) template nxt-chk entries created\n",
- X numtemps * nummecs, current_max_template_xpairs,
- X numtemps * numecs );
- X fprintf( stderr, " %d empty table entries\n", nummt );
- X fprintf( stderr, " %d protos created\n", numprots );
- X fprintf( stderr, " %d templates created, %d uses\n",
- X numtemps, tmpuses );
- X }
- X
- X if ( useecs )
- X {
- X tblsiz = tblsiz + csize;
- X fprintf( stderr, " %d/%d equivalence classes created\n",
- X numecs, csize );
- X }
- X
- X if ( usemecs )
- X {
- X tblsiz = tblsiz + numecs;
- X fprintf( stderr, " %d/%d meta-equivalence classes created\n",
- X nummecs, csize );
- X }
- X
- X fprintf( stderr, " %d (%d saved) hash collisions, %d DFAs equal\n",
- X hshcol, hshsave, dfaeql );
- X fprintf( stderr, " %d sets of reallocations needed\n", num_reallocs );
- X fprintf( stderr, " %d total table entries needed\n", tblsiz );
- X }
- X
- X#ifndef VMS
- X exit( status );
- X#else
- X exit( status + 1 );
- X#endif
- X }
- X
- X
- X/* flexinit - initialize flex
- X *
- X * synopsis
- X * int argc;
- X * char **argv;
- X * flexinit( argc, argv );
- X */
- X
- Xvoid flexinit( argc, argv )
- Xint argc;
- Xchar **argv;
- X
- X {
- X int i, sawcmpflag;
- X char *arg, *flex_gettime(), *mktemp();
- X
- X printstats = syntaxerror = trace = spprdflt = interactive = caseins = false;
- X backtrack_report = performance_report = ddebug = fulltbl = fullspd = false;
- X yymore_used = continued_action = reject = false;
- X yymore_really_used = reject_really_used = false;
- X gen_line_dirs = usemecs = useecs = true;
- X
- X sawcmpflag = false;
- X use_stdout = false;
- X
- X csize = DEFAULT_CSIZE;
- X
- X program_name = argv[0];
- X
- X /* read flags */
- X for ( --argc, ++argv; argc ; --argc, ++argv )
- X {
- X if ( argv[0][0] != '-' || argv[0][1] == '\0' )
- X break;
- X
- X arg = argv[0];
- X
- X for ( i = 1; arg[i] != '\0'; ++i )
- X switch ( arg[i] )
- X {
- X case 'b':
- X backtrack_report = true;
- X break;
- X
- X case 'c':
- X fprintf( stderr,
- X "%s: Assuming use of deprecated -c flag is really intended to be -C\n",
- X program_name );
- X
- X /* fall through */
- X
- X case 'C':
- X if ( i != 1 )
- X flexerror( "-C flag must be given separately" );
- X
- X if ( ! sawcmpflag )
- X {
- X useecs = false;
- X usemecs = false;
- X fulltbl = false;
- X sawcmpflag = true;
- X }
- X
- X for ( ++i; arg[i] != '\0'; ++i )
- X switch ( arg[i] )
- X {
- X case 'e':
- X useecs = true;
- X break;
- X
- X case 'F':
- X fullspd = true;
- X break;
- X
- X case 'f':
- X fulltbl = true;
- X break;
- X
- X case 'm':
- X usemecs = true;
- X break;
- X
- X default:
- X lerrif( "unknown -C option '%c'",
- X (int) arg[i] );
- X break;
- X }
- X
- X goto get_next_arg;
- X
- X case 'd':
- X ddebug = true;
- X break;
- X
- X case 'f':
- X useecs = usemecs = false;
- X fulltbl = true;
- X break;
- X
- X case 'F':
- X useecs = usemecs = false;
- X fullspd = true;
- X break;
- X
- X case 'I':
- X interactive = true;
- X break;
- X
- X case 'i':
- X caseins = true;
- X break;
- X
- X case 'L':
- X gen_line_dirs = false;
- X break;
- X
- X case 'n':
- X /* stupid do-nothing deprecated option */
- X break;
- X
- X case 'p':
- X performance_report = true;
- X break;
- X
- X case 'S':
- X if ( i != 1 )
- X flexerror( "-S flag must be given separately" );
- X
- X skelname = arg + i + 1;
- X goto get_next_arg;
- X
- X case 's':
- X spprdflt = true;
- X break;
- X
- X case 't':
- X use_stdout = true;
- X break;
- X
- X case 'T':
- X trace = true;
- X break;
- X
- X case 'v':
- X printstats = true;
- X break;
- X
- X case '8':
- X csize = CSIZE;
- X break;
- X
- X default:
- X lerrif( "unknown flag '%c'", (int) arg[i] );
- X break;
- X }
- X
- Xget_next_arg: /* used by -C and -S flags in lieu of a "continue 2" control */
- X ;
- X }
- X
- X if ( (fulltbl || fullspd) && usemecs )
- X flexerror( "full table and -Cm don't make sense together" );
- X
- X if ( (fulltbl || fullspd) && interactive )
- X flexerror( "full table and -I are (currently) incompatible" );
- X
- X if ( fulltbl && fullspd )
- X flexerror( "full table and -F are mutually exclusive" );
- X
- X if ( ! skelname )
- X {
- X static char skeleton_name_storage[400];
- X
- X skelname = skeleton_name_storage;
- X (void) strcpy( skelname, DEFAULT_SKELETON_FILE );
- X }
- X
- X if ( ! use_stdout )
- X {
- X FILE *prev_stdout = freopen( outfile, "w", stdout );
- X
- X if ( prev_stdout == NULL )
- X lerrsf( "could not create %s", outfile );
- X
- X outfile_created = 1;
- X }
- X
- X num_input_files = argc;
- X input_files = argv;
- X set_input_file( num_input_files > 0 ? input_files[0] : NULL );
- X
- X if ( backtrack_report )
- X {
- X#ifndef SHORT_FILE_NAMES
- X backtrack_file = fopen( "lex.backtrack", "w" );
- X#else
- X backtrack_file = fopen( "lex.bck", "w" );
- X#endif
- X
- X if ( backtrack_file == NULL )
- X flexerror( "could not create lex.backtrack" );
- X }
- X
- X else
- X backtrack_file = NULL;
- X
- X
- X lastccl = 0;
- X lastsc = 0;
- X
- X /* initialize the statistics */
- X starttime = flex_gettime();
- X
- X if ( (skelfile = fopen( skelname, "r" )) == NULL )
- X lerrsf( "can't open skeleton file %s", skelname );
- X
- X#ifdef SYS_V
- X action_file_name = tmpnam( NULL );
- X#endif
- X
- X if ( action_file_name == NULL )
- X {
- X static char temp_action_file_name[32];
- X
- X#ifndef SHORT_FILE_NAMES
- X (void) strcpy( temp_action_file_name, "/tmp/flexXXXXXX" );
- X#else
- X (void) strcpy( temp_action_file_name, "flexXXXXXX.tmp" );
- X#endif
- X (void) mktemp( temp_action_file_name );
- X
- X action_file_name = temp_action_file_name;
- X }
- X
- X if ( (temp_action_file = fopen( action_file_name, "w" )) == NULL )
- X lerrsf( "can't open temporary action file %s", action_file_name );
- X
- X lastdfa = lastnfa = num_rules = numas = numsnpairs = tmpuses = 0;
- X numecs = numeps = eps2 = num_reallocs = hshcol = dfaeql = totnst = 0;
- X numuniq = numdup = hshsave = eofseen = datapos = dataline = 0;
- X num_backtracking = onesp = numprots = 0;
- X variable_trailing_context_rules = bol_needed = false;
- X
- X linenum = sectnum = 1;
- X firstprot = NIL;
- X
- X /* used in mkprot() so that the first proto goes in slot 1
- X * of the proto queue
- X */
- X lastprot = 1;
- X
- X if ( useecs )
- X { /* set up doubly-linked equivalence classes */
- X /* We loop all the way up to csize, since ecgroup[csize] is the
- X * position used for NUL characters
- X */
- X ecgroup[1] = NIL;
- X
- X for ( i = 2; i <= csize; ++i )
- X {
- X ecgroup[i] = i - 1;
- X nextecm[i - 1] = i;
- X }
- X
- X nextecm[csize] = NIL;
- X }
- X
- X else
- X { /* put everything in its own equivalence class */
- X for ( i = 1; i <= csize; ++i )
- X {
- X ecgroup[i] = i;
- X nextecm[i] = BAD_SUBSCRIPT; /* to catch errors */
- X }
- X }
- X
- X set_up_initial_allocations();
- X }
- X
- X
- X/* readin - read in the rules section of the input file(s)
- X *
- X * synopsis
- X * readin();
- X */
- X
- Xvoid readin()
- X
- X {
- X skelout();
- X
- X if ( ddebug )
- X puts( "#define FLEX_DEBUG" );
- X
- X if ( csize == 256 )
- X puts( "#define YY_CHAR unsigned char" );
- X else
- X puts( "#define YY_CHAR char" );
- X
- X line_directive_out( stdout );
- X
- X if ( yyparse() )
- X {
- X pinpoint_message( "fatal parse error" );
- X flexend( 1 );
- X }
- X
- X if ( xlation )
- X {
- X numecs = ecs_from_xlation( ecgroup );
- X useecs = true;
- X }
- X
- X else if ( useecs )
- X numecs = cre8ecs( nextecm, ecgroup, csize );
- X
- X else
- X numecs = csize;
- X
- X /* now map the equivalence class for NUL to its expected place */
- X ecgroup[0] = ecgroup[csize];
- X NUL_ec = abs( ecgroup[0] );
- X
- X if ( useecs )
- X ccl2ecl();
- X }
- X
- X
- X
- X/* set_up_initial_allocations - allocate memory for internal tables */
- X
- Xvoid set_up_initial_allocations()
- X
- X {
- X current_mns = INITIAL_MNS;
- X firstst = allocate_integer_array( current_mns );
- X lastst = allocate_integer_array( current_mns );
- X finalst = allocate_integer_array( current_mns );
- X transchar = allocate_integer_array( current_mns );
- X trans1 = allocate_integer_array( current_mns );
- X trans2 = allocate_integer_array( current_mns );
- X accptnum = allocate_integer_array( current_mns );
- X assoc_rule = allocate_integer_array( current_mns );
- X state_type = allocate_integer_array( current_mns );
- X
- X current_max_rules = INITIAL_MAX_RULES;
- X rule_type = allocate_integer_array( current_max_rules );
- X rule_linenum = allocate_integer_array( current_max_rules );
- X
- X current_max_scs = INITIAL_MAX_SCS;
- X scset = allocate_integer_array( current_max_scs );
- X scbol = allocate_integer_array( current_max_scs );
- X scxclu = allocate_integer_array( current_max_scs );
- X sceof = allocate_integer_array( current_max_scs );
- X scname = allocate_char_ptr_array( current_max_scs );
- X actvsc = allocate_integer_array( current_max_scs );
- X
- X current_maxccls = INITIAL_MAX_CCLS;
- X cclmap = allocate_integer_array( current_maxccls );
- X ccllen = allocate_integer_array( current_maxccls );
- X cclng = allocate_integer_array( current_maxccls );
- X
- X current_max_ccl_tbl_size = INITIAL_MAX_CCL_TBL_SIZE;
- X ccltbl = allocate_character_array( current_max_ccl_tbl_size );
- X
- X current_max_dfa_size = INITIAL_MAX_DFA_SIZE;
- X
- X current_max_xpairs = INITIAL_MAX_XPAIRS;
- X nxt = allocate_integer_array( current_max_xpairs );
- X chk = allocate_integer_array( current_max_xpairs );
- X
- X current_max_template_xpairs = INITIAL_MAX_TEMPLATE_XPAIRS;
- X tnxt = allocate_integer_array( current_max_template_xpairs );
- X
- X current_max_dfas = INITIAL_MAX_DFAS;
- X base = allocate_integer_array( current_max_dfas );
- X def = allocate_integer_array( current_max_dfas );
- X dfasiz = allocate_integer_array( current_max_dfas );
- X accsiz = allocate_integer_array( current_max_dfas );
- X dhash = allocate_integer_array( current_max_dfas );
- X dss = allocate_int_ptr_array( current_max_dfas );
- X dfaacc = allocate_dfaacc_union( current_max_dfas );
- X
- X nultrans = (int *) 0;
- X }
- END_OF_FILE
- if test 19459 -ne `wc -c <'main.c'`; then
- echo shar: \"'main.c'\" unpacked with wrong size!
- fi
- # end of 'main.c'
- fi
- echo shar: End of archive 5 \(of 10\).
- cp /dev/null ark5isdone
- MISSING=""
- for I in 1 2 3 4 5 6 7 8 9 10 ; do
- if test ! -f ark${I}isdone ; then
- MISSING="${MISSING} ${I}"
- fi
- done
- if test "${MISSING}" = "" ; then
- echo You have unpacked all 10 archives.
- rm -f ark[1-9]isdone ark[1-9][0-9]isdone
- else
- echo You still must unpack the following archives:
- echo " " ${MISSING}
- fi
- exit 0
- exit 0 # Just in case...
-